Oops, John Oliver did it again.

The host encouraged his viewers to visit the FCC site and leave comments in favor of strong net neutrality rules. And to make it easier, he offered a shortcut to the commission's comment form through the domain www.gofccyourself.com.

"I'm calling upon all of you -- the internet, time wasters and troublemakers -- to join me once more in just five to 10 minutes of minor efforts," he said on his show. "I need you to do this. Once more unto the breach, my friends."

Oliver's stab at net neutrality in 2014 gave the late-night host his first viral moment and established the activist comedy tone of his show.

Coincidentally, the FCC suffered a DDoS attack Sunday night that caused its comment system to crash.

"These actors were not attempting to file comments themselves; rather they made it difficult for legitimate commenters to access and file with the FCC," CIO David Bray said in a statement.

It was not immediately clear whether the DDoS attack was related to Sunday's "Last Week Tonight" episode. An FCC spokesman said the commission did not know the motive behind the attack and denied to comment on Oliver's segment.